Lack of power. Vehicle has initial boost on first acceleration, then the check engine light illuminates and power drops as it enters limp mode.

Vehicle entered limp mode after brief initial boost. The customer mentioned that the problem began after a head gasket replacement, and that he had made adjustments to the turbo system. Fault code 2526 — “Check component Y100/1 (right charge pressure positioner) signal wire open circuit” — was stored and would return immediately after clearing.